Dev Tools Mcp

@kapilraghuwanshi/dev-tools-mcp

Zero-config MCP server for developers. No API keys. No secrets. Just plug it in.

22+ tools across encoding, hashing, DNS, IP geolocation, SSL, URL tracing, WHOIS, npm lookups, GitHub, and more.

---

Quick Start

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (Mac) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "devtools": {
      "command": "npx",
      "args": ["-y", "@kapilraghuwanshi/dev-tools-mcp"]
    },
    "devtools-remote": {
      "type": "sse",
      "url": "https://mcp-servers-161f.onrender.com/sse"
    }
  }
}

Restart Claude Desktop — all tools are immediately available.

---

Claude Code (CLI)

claude mcp add @kapilraghuwanshi/dev-tools-mcp -- npx @kapilraghuwanshi/dev-tools-mcp

---

Cursor

Add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "devtools": {
      "command": "npx",
      "args": ["-y", "@kapilraghuwanshi/dev-tools-mcp"]
    },
    "devtools-remote": {
      "type": "sse",
      "url": "https://mcp-servers-161f.onrender.com/sse"
    }
  }
}

---

GitHub Copilot (VS Code)

Add to .vscode/mcp.json in your workspace:

{
  "servers": {
    "devtools": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@kapilraghuwanshi/dev-tools-mcp"]
    },
    "devtools-remote": {
      "type": "sse",
      "url": "https://mcp-servers-161f.onrender.com/sse"
    }
  }
}

---

Windsurf

Add to ~/.windsurf/mcp.json:

{
  "mcpServers": {
    "devtools": {
      "command": "npx",
      "args": ["-y", "@kapilraghuwanshi/dev-tools-mcp"]
    },
    "devtools-remote": {
      "type": "sse",
      "url": "https://mcp-servers-161f.onrender.com/sse"
    }
  }
}

---

Tools

🔵 Compute — offline, instant

Tool	What it does
dt_encode_decode	Base64, URL, HTML encode/decode
dt_hash_string	MD5, SHA1, SHA256 hashing
dt_generate_uuid	Generate 1–20 UUID v4s or NanoIDs
dt_parse_jwt	Decode JWT header + payload (no verification)
dt_diff_text	Line-by-line diff of two strings
dt_convert_case	camelCase ↔ snake_case ↔ kebab-case ↔ PascalCase ↔ CONSTANT_CASE
dt_format_json	Pretty-print or minify JSON
dt_regex_test	Test a regex pattern, return all matches & groups
dt_color_convert	HEX ↔ RGB ↔ HSL color conversion
dt_timestamp_convert	Unix ↔ ISO ↔ UTC + relative time
dt_url_parse	Break URL into protocol, host, path, params, hash
dt_generate_password	Secure random password generator
dt_unit_converter	Convert bytes (KB, MB, GB) and temperature (C, F, K)
dt_lorem_ipsum	Generate placeholder text (words, sentences, paragraphs)
dt_format_sql	Basic SQL query formatter

🌐 Network — public APIs, no auth needed

Tool	What it does
dt_my_ip	Your public IP address
dt_ip_info	Geo, ISP, ASN, timezone for any IP
dt_dns_lookup	A, AAAA, CNAME, MX, TXT, NS, SOA records
dt_http_trace	Follow redirect chain — where does this URL go?
dt_http_headers	Inspect all HTTP response headers of any URL
dt_ssl_check	SSL cert expiry, issuer, SANs, days remaining
dt_port_check	Is TCP port X open on host Y?
dt_whois_lookup	Domain registration details, expiry, registrar

📦 Lookup — developer ecosystem

Tool	What it does
dt_npm_info	Package version, downloads, license, deps
dt_github_repo	Stars, forks, language, topics, license
dt_gitignore_gen	Generate .gitignore for any stack via gitignore.io
dt_caniuse	MDN browser compatibility lookup

---

Example Prompts

Hash this string with SHA256: "my-secret-key"
Parse this JWT and tell me when it expires
Convert "getUserById" to snake_case
Where does https://bit.ly/3xyz redirect?
Check if port 443 is open on github.com
What's the SSL cert expiry for stripe.com?
Get the npm info for the "zod" package
Generate a .gitignore for node, react, and macos
Look up the MX records for gmail.com
Convert hex color #ff6b6b to HSL
WHOIS lookup for github.com
Generate a secure 20-character password with symbols
Convert 1560 megabytes to gigabytes
What is 98.6 Fahrenheit in Celsius?
Give me 3 paragraphs of Lorem Ipsum text
Format this SQL: SELECT * FROM users WHERE active=1 ORDER BY id DESC
Generate a mock dataset of 10 users with names and UUIDs
Check if port 8080 is open on localhost
Decode this Base64 string: SGVsbG8gV29ybGQ=
Generate a NanoID with length 12
Look up browser compatibility for "WebGPU" on caniuse
What ISP and city is the IP 8.8.8.8 located in?
Audit the SSL cert and redirect chain for stripe.com
Create a .gitignore for Python, Django, and macOS

---

Requirements

• Node.js 18+
• No API keys or configuration needed

---

☁️ Remote Deployment (SSE)

You can host this server on Render (100% Free Tier).

1. Fork this repo and connect it to a new Render Web Service.
2. Set the Root Directory to src/devtools.
3. Set Build Command: npm install && npm run build and Start Command: node dist/index.js.
4. Add PORT: 10000.
5. Your live URL will be https://your-service.onrender.com/sse.

Note: Free tier servers "sleep" after 15 mins of inactivity. The first request after a break may take 30s to wake up.

---

License

MIT © Kapil Raghuwanshi